As far as Handling... I can not even come close to comparing the feel of my M3 to the S4 although it is quite good at taking fast corners its the S curves that kill it... Way too soft and too much body roll... You definitely feel the weight of the car as well whereas my M feels VERY light in comparison.

Kudos to the M3 that went out to test.Too bad no vids.

I may run up against a stock S4 this weekend who is planning on getting the same tunes and then we will do an after Tune run against me once he gets the tune to see the before and after.

The B8 S4 has actually been faster not only around the track but also in a straight line when run against the RS4, both stock. You add an ECU upgrade to it and it blows the RS4 away. Once the engine of the B8 S4 is truly explored the car is going to be a beast.

The B8 S4 has actually been faster not only around the track but also in a straight line when run against the RS4, both stock. You add an ECU upgrade to it and it blows the RS4 away. Once the engine of the B8 S4 is truly explored the car is going to be a beast.

True. I almost bought an S4, but went with the M3. I looked at that thread, and while the S4 ECU flash sounds impressive, I wouldn't have done it to my brand new $50K car, and I'd be really skeptical about longevity. The only Audi I've owned (a 2008) burned oil like a 20 year old Ford, and roots blowers are not generally made for high RPM applications, which is where most of the gains are according to that thread. That could end up leading to some really expensive non-warranty repairs.

The B8 S4 has actually been faster not only around the track but also in a straight line when run against the RS4, both stock. You add an ECU upgrade to it and it blows the RS4 away. Once the engine of the B8 S4 is truly explored the car is going to be a beast.

The new S4 is a great looking car with great performance - however - as fastestlaps.com shows, it is definitely not faster in a straight line nor on track compared to RS4 or M3.